/***********************************************************************

	This file is part of KEEL-software, the Data Mining tool for regression, 
	classification, clustering, pattern mining and so on.

	Copyright (C) 2004-2010
	
	F. Herrera (herrera@decsai.ugr.es)
    L. Sánchez (luciano@uniovi.es)
    J. Alcalá-Fdez (jalcala@decsai.ugr.es)
    S. García (sglopez@ujaen.es)
    A. Fernández (alberto.fernandez@ujaen.es)
    J. Luengo (julianlm@decsai.ugr.es)

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see http://www.gnu.org/licenses/
  
**********************************************************************/



package keel.Algorithms.Rule_Learning.Slipper;

import java.util.Vector;

/**
 * Representation of a Trio's vector. It counts the number of instances (positive and negative) that contains each value
 * for a given attribute in a dataset. Each element is a Trio in the form: {value,positives,negatives}
 * 
 * <p>
 * @author Written by Alberto Fernández (University of Granada)  01/07/2008
 * @author Modified by Xavi Solé (La Salle, Ramón Llull University - Barcelona) 03/12/2008
 * @version 1.1
 * @since JDK1.2
 * </p>
 */
public class Score {
	
  //vector of {value,positives,negatives}
  private Vector trios; 

  //static constants
  static int POSITIVE=Trio.POSITIVE;

  static int NEGATIVE=Trio.NEGATIVE;

  /**
   * Default constructor.
   */
  public Score() {
    trios=new Vector();
  }

  /**
   * Adds a new value to the vector.
   * The number of positive and negative instances are initialize to 0.
   *
   * @param key double the new value
   */
  public void addKey(double key){
    Trio t=new Trio(key);
    trios.add(t);
  }

  /**
   * Adds a new value to the vector.
   * The number of positive and negative instances are initialize to 0 or 1
   * wether the sign is POSITIVE or NEGATIVE.
   *
   * @param key double the new value
   * @param value the adding value
   * @param sign int it indicates wich of the measures will be intialized to 1 (the other will be initialized to 0)
   */
  public void addKey(double key,double value,int sign){
    Trio t=new Trio(key);
    if (sign==POSITIVE)
      t.addPositive(value);
    else if (sign==NEGATIVE)
      t.addNegative(value);
    trios.add(t);
  }

  /**
   * Increases the number of positives instances in a given vector's position.
   *
   * @param pos int vector's position
   * @param value the adding value
   */
  public void addPositive(int pos,double value){
    ((Trio)trios.elementAt(pos)).addPositive(value);
  }

  /**
   * Increases the number of positives instances of a given values.
   *
   * @param key double the value
   * @param value the adding value
   */
  public void addPositive(double key,double value){
    int pos=findKey(key);
    ((Trio)trios.elementAt(pos)).addPositive(value);
  }

  /**
   * Increases the number of negatives instances in a given vector's position.
   *
   * @param pos int vector's position
   * @param value the adding value
   */
  public void addNegative(int pos,double value){
    ((Trio)trios.elementAt(pos)).addNegative(value);
  }

  /**
   * Increases the number of negatives instances of a given values.
   *
   * @param key double the value
   * @param value the adding value
   */
  public void addNegative(double key,double value){
    int pos=findKey(key);
    ((Trio)trios.elementAt(pos)).addNegative(value);
  }

  /**
   * Returns the vector's position of a given value
   *
   * @param key double the value
   * @return the value's position in the vector
   */
  public int findKey(double key){
    int i;
    for (i=0; i<trios.size() && ((Trio)trios.elementAt(i)).getKey()!=key;i++);
    if (i<trios.size())
      return i;
    else
      return -1;
  }

  /**
   * Returns the value at a given position of the vector
   * (inverse method of findKey).
   *
   * @param pos int position of the vector.
   * @return the value at that position of the vector.
   */
  public double getKey(int pos){
    return ((Trio)trios.elementAt(pos)).getKey();
  }

  /**
   * Returns the number of positive instances of the dataset
   * that contains the value at a given position of the vector.
   *
   * @param pos int position of the vector
   * @return number of positive instances.
   */
  public double getPositive(int pos){
    return ((Trio)trios.elementAt(pos)).getPositive();
  }

  /**
   * Returns the number of positive instances that contains the given value.
   *
   * @param key double the value
   * @return number of positive instances.
   */
  public double getPositive(double key){
    int pos=findKey(key);
    return ((Trio)trios.elementAt(pos)).getPositive();
  }

  /**
   * Returns the number of negative instances of the dataset
   * that contains the value at a given position of the vector.
   *
   * @param pos int position of the vector
   * @return number of negative instances.
   */
  public double getNegative(int pos){
    return ((Trio)trios.elementAt(pos)).getNegative();
  }

  /**
   * Returns the number of negative instances that contains the given value.
   *
   * @param key double the value
   * @return number of negative instances.
   */
  public double getNegative(double key){
    int pos=findKey(key);
    return ((Trio)trios.elementAt(pos)).getNegative();
  }

  /**
   * Returns the total number of instances of the dataset
   * that contains the value at a given position of the vector.
   *
   * @param pos int position of the vector
   * @return the total number of instances
   */
  public double getTotal(int pos){
    return ((Trio)trios.elementAt(pos)).getNegative()+((Trio)trios.elementAt(pos)).getPositive();
  }

  /**
   * Returns the total number of instances that contains the given value.
   *
   * @param key double the value
   * @return the total number of instances
   */
  public double getTotal(double key){
    int pos=findKey(key);
    return ((Trio)trios.elementAt(pos)).getNegative()+((Trio)trios.elementAt(pos)).getPositive();
  }

    /**
     * Sorts the trios stored with the mergesort algorithm.
     */
    public void sort(){
    if (trios.size()>1){
      Trio[] t = new Trio[trios.size()];
      trios.toArray(t);
      Utilities.mergeSort(t, trios.size());
      trios = new Vector(java.util.Arrays.asList(t));
    }
  }

  /**
   * Returns the size of the vector (the number of values).
   *
   * @return the size of the vector
   */
  public int size(){
    return trios.size();
  }

  /**
   * Returns a string representation of this Score, containing the String representation of each Trio.
   *
   * @return a string representation of this Score, containing the String representation of each Trio.
   */
  public String toString(){
    String outcome="";
    for (int i=0;i<trios.size();i++){
      outcome+=(Trio) trios.elementAt(i)+"\n";
    }
    return outcome;
  }

  /**
   * Returns a string representation of this Score, containing the String representation of each Trio, taking into account the given attribute's id.
   *
   * @param a int attribute's id
   * @return a string representation of this Score, containing the String representation of each Trio, taking into account the given attribute's id.
   */
  public String toString(int a){
    String outcome="";
    for (int i=0;i<trios.size();i++){
      outcome+=((Trio) trios.elementAt(i)).toString(a)+"\n";
    }
    return outcome;
  }

}

